TIDA-00468

Optimized Latency, Power and Memory Footprint Thermocouple Sensing Front-end Reference Design

TIDA-00468

Design files

Overview

The TIDA-00468 Reference design shows how to build an isolated thermocouple sensing front-end with optimized power-consumption for loop powered application while:
• reducing footprint from classical look-up table approach and
• keeping the fast response time of linear piece wise interpolation

Features
  • Sensor Input: K-Type Thermocouple
  • Temperature range:-270..1372 C
  • System accuracy: +/- 0.2K
  • Piecewise linear interpolation
  • Look-up table size: 320 bytes
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUA11A.PDF (2156 KB)

Reference design overview and verified performance test data

TIDRFI9.PDF (145 KB)

Detailed overview of design layout for component placement

TIDRFI8.PDF (196 KB)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRFJ1.ZIP (10040 KB)

Files used for 3D models or 2D drawings of IC components

TIDCAI9.ZIP (1690 KB)

Design file that contains information on physical board layer of design PCB

TIDRFJ0.PDF (743 KB)

PCB layer plot file used for generating PCB design layout

TIDRFI7.PDF (375 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Precision ADCs

ADS122024-bit, 2-kSPS, four-channel, low-power, delta-sigma ADC with PGA, VREF, SPI and two IDACs

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430FR594916 MHz MCU with 64KB FRAM, 2KB SRAM, AES, 12-bit ADC, comparator, DMA, UART/SPI/I2C, timer

Data sheet: PDF | HTML
Series voltage references

REF50Low-noise, very low-drift, wide-VIN precision voltage reference

Data sheet: PDF | HTML
I2C general-purpose I/Os (GPIOs)

TCA953516-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Optimized Sensor Linearization for Thermocouple Design Guide (Rev. A) Aug 28, 2015

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